[Tex/LaTex] Setting the height or position of a block in tikzposter

tikzposter

I have two poster in tikzposter and would like to hang them next to each other.
Each poster has three blocks.
I would like similiar blocks to have the same position on both posters. How can this be achieved?

Thank you for your time.

EDIT:
code extract:

\documentclass[25pt, a0paper, portrait, margin=0mm, innermargin=15mm, blockverticalspace=15mm, colspace=15mm, subcolspace=8mm]{tikzposter}
\usepackage[utf8]{inputenc}
\useblockstyle{Basic}
\begin{document}
\begin{frame}[t]
\block{Title A}{Content A}
\block{Title B}{Content B} 
\block{Title B}{Content C}
\end{frame}
\end{document}

On both posters, the contents of the blocks have different lengths. The problem is to make them the same height (or the same position for that matter).

Best Answer

Here is a solution.

New command \mtblock{Title 1}{Poster 1 content}{Title 2}{Poster 2 content} that save content and measure height of block

One .tex file, to be compiled with \firsttrue for poster 1. and without it or \firstfalse for poster 2. 

\documentclass[25pt, a0paper, portrait, margin=0mm, innermargin=15mm, blockverticalspace=15mm, colspace=15mm, subcolspace=8mm]{tikzposter}
\usepackage[utf8]{inputenc}
\useblockstyle{Basic}

\usepackage{lipsum}% just for the example

\newif\iffirst
\newlength\htblockbox
\newbox\blockbox

\newcommand{\mtblock}[4]{%
\block{\iffirst #1\else #3\fi}{%
\setbox\blockbox\vbox{#2}%
\setlength{\htblockbox}{\ht\blockbox}%
\setbox\blockbox\vbox{#4}%
\ifdim\htblockbox<\ht\blockbox
\setlength{\htblockbox}{\ht\blockbox}%
\fi
\parbox[t][\htblockbox][c]{\linewidth}{\iffirst #2\else #4\fi}}}

\title{Block height}
\author{User}



\begin{document}
\maketitle

%\firsttrue     %uncomment for poster 1: A,B,C
\begin{frame}[t]
\mtblock{Title 1}{Poster 1 content}{Title 2}{Poster 2 content}
\mtblock{Title A}{\lipsum[1]}{Title AA}{\lipsum[1-2]}
\mtblock{Title B}{\lipsum[1]}{Title BB}{\lipsum[1-2]}
\mtblock{Title C}{\lipsum[1-2]}{Title CC}{\lipsum[1]}
\end{frame}

\end{document}
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